@mixin base-style() {
    font-size: 14px;
    color: #999999;
    letter-spacing: 0;
}

,
input[placeholder]::-webkit-input-placeholder,
textarea[placeholder]::-webkit-input-placeholder {
    /* Chrome/Opera/Safari */
    @include base-style;
}

input[placeholder]::-moz-placeholder,
textarea[placeholder]::-moz-placeholder {
    /* Firefox 19+ */
    @include base-style;
}

input[placeholder]:-ms-input-placeholder,
textarea[placeholder]:-ms-input-placeholder {
    /* IE 10+ */
    @include base-style;
}

input[placeholder]:-moz-placeholder,
textarea[placeholder]:-moz-placeholder {
    /* Firefox 18- */
    @include base-style;
}
.el-form-item {
    margin-bottom: 15px;
}
